Challenge

Welcome to the Cryptocurrency Cyber Challenge, a unique contest to develop methods for attack and defense of cryptocurrency systems. Build and secure new applications using testnet tokens in a red-team blue-team environment while competing with neighbor teams. Depending on sponsor fundraising, we may be able to award prizes for the best achievements.

GENERAL CONDITIONS

To participate free of charge in challenging activities, speak with a Cryptocurrency Challenge staffmember for detailed instructions. A variety of prizes await you, and may run out during the event. Awarding of prizes is not guaranteed and may depend on the opinions and moods of sloppy judges. Your physical presence is required.

CTF CHALLENGES

Lore

Kiasu Gatekeeper

Easy - Exploit a KYC access control flaw to mint tokens without being whitelisted.

Orchard Road Flash Crash

Medium - Manipulate a price oracle using a flash loan to drain value from the system.

Ghost in the CBDC

Hard - Exploit signature replay to drain funds from the insurance pool.

HACKATHON BUILD

Projects

Privacy - Hide

Design systems that protect user identity and sensitive data in blockchain environments.

Exploitation - Break

Analyze and attack systems to uncover vulnerabilities and improve security understanding.

Sovereignty - Survive

Build systems that remain secure, independent, and resilient under failure or attack.

Escape - Evade

Create systems that continue operating under censorship, outages, or adversarial conditions.

Project Tracks

Choose what you want to build and demonstrate your idea through a working concept or design.

CONTEST RULES

Levels

Level 1

To win the first level, answer five questions relating to offensive security practices in cryptocurrency systems. Use the list in this book to practice.

Level 2

To win this level, create a testnet wallet, write down the seed phrase safely, answer a few security questions, and send a test transaction.

Level 3

To win, connect your badge to a computer, and customize or reset the device.

Level 4

To win this level, find the hidden data stored in the badge electronics, and show the recovered messages or codes.

Level 5

To win this level, prove your understanding of currency flow. A wallet was violated, funds were drained and moved across multiple wallets to hide the trail. Your mission is to trace the transactions, recover the missing seed phrase word hidden in the on-chain data, and identify where the funds finally ended up.

Level 6

To win this level, deanonymize a given wallet. Participants are given a cluster of transactions where privacy techniques have been applied imperfectly. They must identify the fingerprint leak that breaks anonymity and name the wallet or actor behind it.

Adversaries Everywhere

Through creative use of challenge resources we may have planted secret adversaries in your team, so double check your solutions.

Win a Prize

Try hard enough and you might convince a Cryptocurrency Challenge judge to award a prize (if available) for your solution to defend users from attacks on an application or network.